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- 1. SATA usage in U-boot
- Two ways to operate the hard disk
- * Raw read/write block from/to SATA hard disk;
- * ext2load read file from ext2 filesytem in hard disk
- 1.0 How to know the information of SATA hard disk?
- => sata info
- SATA device 0: Model: ST3320620AS Firm: 3.AAD Ser#: 4QF01ZTN
- Type: Hard Disk
- Supports 48-bit addressing
- Capacity: 305245.3 MB = 298.0 GB (625142448 x 512)
- 1.1 How to save the kernel, filesystem, dtb to SATA hard disk with raw?
- Notes: 0x1000 sectors = 2 MBytes
- wirte kernel
- => tftp 40000 /tftpboot/uImage.837x
- => sata write 40000 0 2000
- write ramdisk
- => tftp 40000 /tftpboot/ramdisk.837x
- => sata write 40000 2000 8000
- write dtb
- => tftp 40000 /tftpboot/mpc837xemds.dtb
- => sata write 40000 a000 1000
- 1.2 How to read the kernel, filesystem, dtb from SATA hard disk with raw?
- load kernel
- => sata read 200000 0 2000
- load ramdisk
- => sata read 1000000 2000 8000
- load dtb
- => sata read 2000000 a000 1000
- boot
- => bootm 200000 1000000 2000000
- 1.3 How to load image from ext2 filesystem in U-boot?
- U-boot doesn't support ext2 write to hard disk, so
- you have to write the image to hard disk under Linux env,
- before you load image from ext2 filesystem.
- => ext2ls sata 0:1 /
- <DIR> 4096 .
- <DIR> 4096 ..
- <DIR> 16384 lost+found
- 1352023 uImage.837x
- 3646377 ramdisk.837x
- 12288 mpc837xemds.dtb
- 12 hello.txt
- => ext2load sata 0:1 200000 /uImage.837x
- => ext2load sata 0:1 1000000 /ramdisk.837x
- => ext2load sata 0:1 2000000 /mpc837xemds.dtb
- => bootm 200000 1000000 2000000
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